Fix rebase.

Author: trivialfis

src/metric/rank_metric.cc

@@ -110,8 +110,7 @@ class PerGroupWeightPolicy {
 };
 }  // anonymous namespace
 
-namespace xgboost {
-namespace metric {
+namespace xgboost::metric {
 // tag the this file, used by force static link later.
 DMLC_REGISTRY_FILE_TAG(rank_metric);
 
@@ -440,9 +439,7 @@ class EvalNDCG : public EvalRankWithCache<ltr::NDCGCache> {
     auto p_discount = p_cache->Discount(ctx_).data();
 
     auto h_label = info.labels.HostView();
-    auto h_predt =
-        linalg::MakeTensorView(ctx_->IsCPU() ? preds.ConstHostSpan() : preds.ConstDeviceSpan(),
-                               {preds.Size()}, ctx_->gpu_id);
+    auto h_predt = linalg::MakeTensorView(ctx_, &preds, preds.Size());
     auto weights = common::MakeOptionalWeights(ctx_, info.weights_);
 
     common::ParallelFor(n_groups, ctx_->Threads(), [&](auto g) {
@@ -493,9 +490,7 @@ class EvalMAPScore : public EvalRankWithCache<ltr::MAPCache> {
 
     auto gptr = p_cache->DataGroupPtr(ctx_);
     auto h_label = info.labels.HostView().Slice(linalg::All(), 0);
-    auto h_predt =
-        linalg::MakeTensorView(ctx_->IsCPU() ? predt.ConstHostSpan() : predt.ConstDeviceSpan(),
-                               {predt.Size()}, ctx_->gpu_id);
+    auto h_predt = linalg::MakeTensorView(ctx_, &predt, predt.Size());
 
     auto map_gloc = p_cache->Map(ctx_);
     std::fill_n(map_gloc.data(), map_gloc.size(), 0.0);
@@ -548,5 +543,4 @@ XGBOOST_REGISTER_METRIC(EvalNDCG, "ndcg")
     .set_body([](char const* param) {
       return new EvalNDCG{"ndcg", param};
     });
-}  // namespace metric
-}  // namespace xgboost
+}  // namespace xgboost::metric

src/metric/rank_metric.cu

@@ -24,8 +24,7 @@
 #include "xgboost/logging.h"             // for CHECK
 #include "xgboost/metric.h"
 
-namespace xgboost {
-namespace metric {
+namespace xgboost::metric {
 // tag the this file, used by force static link later.
 DMLC_REGISTRY_FILE_TAG(rank_metric_gpu);
 
@@ -142,7 +141,7 @@ PackedReduceResult NDCGScore(Context const *ctx, MetaInfo const &info,
   }
   auto d_label = info.labels.View(ctx->gpu_id).Slice(linalg::All(), 0);
   predt.SetDevice(ctx->gpu_id);
-  auto d_predt = linalg::MakeTensorView(predt.ConstDeviceSpan(), {predt.Size()}, ctx->gpu_id);
+  auto d_predt = linalg::MakeTensorView(ctx, predt.ConstDeviceSpan(), predt.Size());
 
   auto d_group_ptr = p_cache->DataGroupPtr(ctx);
   auto n_groups = info.group_ptr_.size() - 1;
@@ -249,5 +248,4 @@ PackedReduceResult MAPScore(Context const *ctx, MetaInfo const &info,
   return result;
 }
 }  // namespace cuda_impl
-}  // namespace metric
-}  // namespace xgboost
+}  // namespace xgboost::metric